Regime change is the forcible or coerced replacement of one government regime with another. Regime change may replace all or part of the state's most critical leadership system, administrative apparatus, or bureaucracy. Regime change may occur through domestic processes, such as revolution, coup, or reconstruction of government following state failure or civil war. It can also be imposed on a country by foreign actors through invasion, overt or covert interventions, or coercive diplomacy. In addition to replacing one government with another, regime change may entail the construction of new institutions, the restoration of old institutions, and the promotion of new ideologies.